Improvement in pump-handle links



C. ADAMS Prim-HANDLE LINK.

Pate'nte5.'Nov.9;18-75.

N.PETERS. FHOTOLITHDGRAFHEIL WASHINGTON, n C.

UNITED STATES PATENT @FFIoe.

CALVIN ADAMS, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO STEPHEN JARVIS ANDS. J. ADAMS, OF SAME PLACE.

IMPROVEMENT IN PUMP-HANDLE LINKS.

Specification forming part of Letters Patent No. 169,755, dated NOV(mber 9, 1875; application filed September 25, 1875.

To all whom it may concern:

Be it known that I, CALVIN ADAMS, of the city of Pittsburg, in thecounty of Allegheny and State of Pennsylvania, have invented anImprovement inPump-Handle Links, of which the following is aspecification:

The peculiar feature of my invention, and the part of the link shown inthe drawing, which needs to be described, is the head-piece A, and themanner of constructing it. This piece is made of cast-iron. The ears orprojections a a, formed on either side, are made to project through andfit into the holes I) b of the side pieces B B, thus doing away with thewrought-iron pin or bolt which is ordinarily cast into the head, toconnect it with the side pieces. Through the longitudinal center of thehead I form an opening, U, either at the time of casting or bysubsequent drilling, large enough to receive a bolt, 1), of suitablesize and strength to fasten the link to the handle; Through this openingthe bolt is passed, as shown in Fig. l, and then goes through thehandle, to which it is secured by a nut; or the process may be reversed,so as to first pass the bolt through the handle, and secure it to thehead-piece A by cutting a thread in the opening 0, into which the boltcan be screwed.

The advantage of this invention over the ordinary method of casting thehead-piece on the bolt is in its superior strength, durability, andcheapness.

When the bolt and head are cast together the cast-iron is chilled andbrittle, and the wrought-iron weakened, while in the invention shown anddescribed, it by any accident the bolt is broken, it can easily bereplaced without disturbing the other parts of the link.

I claim as my invention- A link for pump-handles, made with an opening,into or through which the connecting-bolt is passed, substantially asand for the purpose shown and described.

CALV IN. ADAMS.

